3 ms·
> I'm not exactly sure how all of that works Brakes on heavy vehicles like semis are set up so that a heavy spring closes the brakes with maximum force unless
by letitbeirie 5y ago
> I'm not exactly sure how all of that works
Brakes on heavy vehicles like semis are set up so that a heavy spring closes the brakes with maximum force unless the air system is pressurized to prevent that from happening.
That way if the system fails, the driver finds out about it like this guy did (i.e. the truck failing to move) rather than his brakes failing and causing a crash.